Angono: Native to the United States. This variety is the latest variety of American brown series. The fruit is big, the average single fruit weight is 1.20g, and the maximum is 250g ... The fruit is purple-black, the meat is dark red, the taste is sweet, the sugar content is 15%, the meat is hard, it can be stored and transported, and it will mature in late September. Cold storage can last until May of the following year 1. This variety is the most storage-resistant late-maturing variety at present.

Black gem: Originated in the United States, it is the first of the top ten main varieties of brown plum in California. The fruit is large, with an average single fruit weight of 92g and the maximum fruit weight190g. The fruit is purple-black, sweet and refreshing, resistant to storage and transportation, and mature in early September. Cold storage can last for more than 3 months;

Black amber: native to the United States. The fruit is large, with average single fruit weight 100g and maximum fruit weight 150g. The fruit is purple-black, the flesh is light yellow, the taste is sweet, and it is resistant to storage and transportation. Cross pollination matures in late July;

Qiu Ji: Originally from Japan. The fruit is large, with an average single fruit weight of 200 grams and a maximum fruit weight of 300 grams. The fruit is bright red, the flesh is yellow, the taste is sweet, it falls off, and it is resistant to storage and transportation. Mature in early September;

President: the fruit is cone-shaped, the fruit surface is purple-black, the flesh is yellow, and the weight of a single fruit is 100g. Hard, sweet, juicy, high quality, good yield, storage and transportation resistance, mature in early September. It is an excellent variety with great development prospects.

Ruby plum: American origin, the fruit is nearly round and large, with an average single fruit weight of100g, and the maximum fruit weight of 200g. It is self-flowering, with pink fruit, hard pulp, storage and transportation resistance, and ripens in early September.

Plum is not strict with soil. Different soils such as sand and clay can be cultivated, but the soil with deep and fertile soil layer and good water retention is better. When you build a garden on the hillside, you should prepare the soil first. In order to avoid the harm of late frost, late flowering varieties should be selected when building gardens in low-lying mountainous areas. 2 kg of superphosphate can be added to backfill the topsoil in each pit, and the topsoil and superphosphate can be fully mixed before backfilling the pit. Near-surface soil is excavated from the rest of the surface. When backfilled to insufficient ground, calcium superphosphate will be less. Calcium superphosphate can loosen soil and improve soil environment. On the other hand, seedlings have a great demand for phosphorus, such as weeds, litter, corn straw, rice straw and so on. It will rot easily when it comes to phosphate fertilizer.

References:

Li Zishu Baidu Encyclopedia